<?php
/* Currency Codes
978 = EUR
364 = IRR
784 = AED
826 = GBP
949 = TRY
*/
try
{
    $client = new SoapClient( 'https://gate.yekpay.com/api/payment/server?wsdl', array( 'encoding' => 'UTF-8' ) );
    $result = $client->request($p = (object)array(
            'merchantId'       => 'ABCDEFGHIJKLMNOPQRSTUVWXYZ123456',
            'fromCurrencyCode' => 364, // IRR
            'toCurrencyCode'   => 978, // EUR
            'email'            => '[email protected]',
            'mobile'           => '09123456789',
            'firstName'        => 'Name',
            'lastName'         => 'Family',
            'address'          => 'No.1, Second.St, Third.Sq',
            'postalCode'       => '1234567890',
            'country'          => 'Iran',
            'city'             => 'Tehran',
            'description'      => 'Payment Description',
            'amount'           => number_format(1000000,2), // it means the price is 1.000.000 IRR in our site , and we want to pay the invoice with euro (about 6-7 euro)
            'orderNumber'      => time(),
            'callback'         => 'http://www.YOUR-SITE.com/yekpay/verify.php',
        ));
    $object = json_decode($result);
    if ( $object->Code == 100 )
    {
        $Payment_URL = 'https://gate.yekpay.com/api/payment/start/' . $object->Authority;
        header('location: ' . $Payment_URL);
    }
    else
    {
        echo('YekPay Error : ' . $object->Description);
    }
}
catch (exception $ex)
{
    var_dump($ex);
}

using System;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
public class request_response
{
    public string Code;
    public string Authority;
    public string Description;
}
public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void btnPay_Click(object sender, EventArgs e)
    {
        try
        {
            string paramz = "";
            paramz = "merchantId=" + ConfigurationManager.AppSettings["merchant"];
            paramz += "&fromCurrencyCode=" + ConfigurationManager.AppSettings["fcc"];
            paramz += "&toCurrencyCode=" + ConfigurationManager.AppSettings["tcc"];
            paramz += "&email=" + txtEmail.Text;
            paramz += "&mobile=" + txtMobile.Text;
            paramz += "&firstName=" + txtFirstName.Text;
            paramz += "&lastName=" + txtLastName.Text;
            paramz += "&address=" + txtAddress.Text;
            paramz += "&postalCode=" + txtZipCode.Text;
            paramz += "&country=" + txtCountry.Text;
            paramz += "&city=" + txtCity.Text;
            paramz += "&description=" + txtDescription.Text;
            paramz += "&amount=" + Convert.ToDecimal(txtAmount.Text);
            paramz += "&orderNumber=" + new Random().Next();
            paramz += "&callback=" + ConfigurationManager.AppSettings["callback"];
            clsRestAPI api = new clsRestAPI();
            string res = api.LoadWebSite("https://gate.yekpay.com/api/payment/request", paramz);
            System.Web.Script.Serialization.JavaScriptSerializer json = new System.Web.Script.Serialization.JavaScriptSerializer();
            request_response result = json.Deserialize<request_response>(res);
            if (result.Code == "100")
            {
                string Payment_URL = "https://gate.yekpay.com/api/payment/start/" + result.Authority;
                Response.Redirect(Payment_URL);
            }
            else
            {
                lblError.Text = "Error : " + result.Description;
            }
        }
        catch (Exception ex)
        {
            lblError.Text = "Error : " + ex.Message;
        }

    }
}

Public Class request_response
    Public Code As String
    Public Authority As String
    Public Description As String
End Class

Partial Class _Default
    Inherits System.Web.UI.Page

    Protected Sub btnPay_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnPay.Click
        Try
            Dim params As String = ""
            params = "merchantId=" & ConfigurationManager.AppSettings("merchant")
            params &= "&fromCurrencyCode=" & ConfigurationManager.AppSettings("fcc")
            params &= "&toCurrencyCode=" & ConfigurationManager.AppSettings("tcc")
            params &= "&email=" & txtEmail.Text
            params &= "&mobile=" & txtMobile.Text
            params &= "&firstName=" & txtFirstName.Text
            params &= "&lastName=" & txtLastName.Text
            params &= "&address=" & txtAddress.Text
            params &= "&postalCode=" & txtZipCode.Text
            params &= "&country=" & txtCountry.Text
            params &= "&city=" & txtCity.Text
            params &= "&description=" & txtDescription.Text
            params &= "&amount=" & Convert.ToDecimal(txtAmount.Text)
            params &= "&orderNumber=" & New Random().Next
            params &= "&callback=" & ConfigurationManager.AppSettings("callback")
            Dim api As New clsRestAPI
            Dim res As String = api.LoadWebSite("https://gate.yekpay.com/api/payment/request", params)
            Dim json As New System.Web.Script.Serialization.JavaScriptSerializer
            Dim result As request_response = json.Deserialize(Of request_response)(res)
            If result.Code = 100 Then
                Dim Payment_URL As String = "https://gate.yekpay.com/api/payment/start/" & result.Authority
                Response.Redirect(Payment_URL)
            Else
                lblError.Text = "Error : " & result.Description
            End If
        Catch ex As Exception
            lblError.Text = "Error : " & ex.Message
        End Try
    End Sub

End Class

<?php
try
{
    if ( isset( $_GET['success'] ) && $_GET['success'] == '1' )
    {
        $Authority  = $_GET['authority'];
        $client = new SoapClient( 'https://gate.yekpay.com/api/payment/server?wsdl', array( 'encoding' => 'UTF-8' ) );
        $result = $client->verify($p = (object)array(
                'merchantId' => 'ABCDEFGHIJKLMNOPQRSTUVWXYZ123456',
                'authority'  => $Authority,
            ));
        $object = json_decode($result);
        if ( $object->Code == 100 )
        {
            echo('YekPay Payment Completed . RefNum : ' . $Authority);
        }
        else
        {
            echo('YekPay Error : ' . $object->Description);
        }
    }
    else
    {
        echo('YekPay Payment Cancelled');
    }
}
catch (exception $ex)
{
    var_dump($ex);
}

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
public class verify_response
{
    public string Code;
    public string Authority;
    public string Description;
}
public partial class Verify : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        try
        {
            if (true || Request.QueryString["success"] == "1")
            {
                string paramz = "";
                paramz = "merchantId=" + ConfigurationManager.AppSettings["merchant"];
                paramz += "&authority=" + Request.QueryString["authority"];
                clsRestAPI api = new clsRestAPI();
                string res = api.LoadWebSite("https://gate.yekpay.com/api/payment/verify", paramz);
                System.Web.Script.Serialization.JavaScriptSerializer json = new System.Web.Script.Serialization.JavaScriptSerializer();
                verify_response result = json.Deserialize<verify_response>(res);
                if (result.Code == "100")
                {
                    lblResult.Text = "Payment Completed";
                }
                else
                {
                    lblResult.Text = "Error : " + result.Description;
                }
            }
            else
            {
                lblResult.Text = "Payment Cancelled";
            }
        }
        catch (Exception ex)
        {
            lblResult.Text = "Error : " + ex.Message;
        }
    }
}

Public Class verify_response
    Public Code As String
    Public Authority As String
    Public Description As String
End Class
Partial Class Verify
    Inherits System.Web.UI.Page
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        Try
            If 1 OrElse Request.QueryString("success") = 1 Then
                Dim params As String = ""
                params = "merchantId=" & ConfigurationManager.AppSettings("merchant")
                params &= "&authority=" & Request.QueryString("authority")
                Dim api As New clsRestAPI
                Dim res As String = api.LoadWebSite("https://gate.yekpay.com/api/payment/verify", params)
                Dim json As New System.Web.Script.Serialization.JavaScriptSerializer
                Dim result As verify_response = json.Deserialize(Of verify_response)(res)
                If result.Code = 100 Then
                    lblResult.Text = "Payment Completed"
                Else
                    lblResult.Text = "Error : " & result.Description
                End If
            Else
                lblResult.Text = "Payment Cancelled"
            End If
        Catch ex As Exception
            lblResult.Text = "Error : " & ex.Message
        End Try
    End Sub
End Class